﻿566 
  ^ 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  remainder 
  of 
  the 
  body 
  white; 
  legs 
  yellow 
  with 
  black 
  line 
  extending 
  

   backward 
  from 
  the 
  coxa 
  of 
  the 
  second 
  and 
  third 
  pairs 
  of 
  legs 
  over 
  the 
  

   mesothorax 
  and 
  metathorax 
  respectively. 
  No 
  respiratory 
  filaments, 
  

   tubercles 
  or 
  lateral 
  fringe 
  are 
  present. 
  The 
  terminal 
  hooks 
  are 
  each 
  

   supported 
  on 
  a 
  very 
  long 
  two-jointed 
  proleg. 
  

  

  Pupa. 
  (PI. 
  13, 
  fig. 
  8) 
  Length 
  12 
  mm. 
  Width 
  2 
  mm. 
  Antennae 
  

   7 
  mm. 
  Wings 
  4 
  mm. 
  Head 
  and 
  thorax 
  yellowish 
  white; 
  antennae 
  

   and 
  legs 
  yellow; 
  abdomen 
  pinkish 
  with 
  slightly 
  darker 
  band 
  on 
  the 
  

   middle 
  of 
  the 
  dorsal 
  side. 
  A 
  single 
  respiratory 
  filament 
  occurs 
  on 
  each 
  

   side 
  of 
  the 
  first 
  segment. 
  A 
  pair 
  of 
  filaments 
  occur 
  in 
  similar 
  position 
  

   on 
  the 
  second, 
  third 
  and 
  fourth 
  segments. 
  The 
  hairy 
  tibial 
  spurs 
  on 
  the 
  

   legs, 
  are 
  3, 
  4, 
  4 
  on 
  the 
  first, 
  second 
  and 
  third 
  pairs 
  respectively. 
  The 
  

   body 
  ends 
  in 
  two 
  blunt, 
  hairy, 
  appendages 
  of 
  two 
  lobes 
  each. 
  Hooks 
  

   pointing 
  backward 
  occur 
  in 
  two 
  rows 
  on 
  the 
  dorsal 
  side 
  of 
  the 
  third, 
  

   fourth, 
  fifth, 
  sixth 
  and 
  seventh 
  segments 
  at 
  the 
  anterior 
  edge. 
  Two 
  

   plates 
  with 
  spikes 
  pointing 
  forward 
  are 
  found 
  at 
  the 
  posterior 
  edge 
  of 
  the 
  

   fifth 
  segment. 
  

  

  Eg"gs. 
  Eggs 
  of 
  this 
  species 
  laid 
  by 
  an 
  adult 
  which 
  was 
  bred, 
  are 
  

   shown 
  in 
  plate 
  13, 
  figure 
  11. 
  

  

  Hydropsyche 
  species? 
  (near 
  phalerata 
  Hag.) 
  

  

  Plate 
  15, 
  figures 
  1-4, 
  7 
  

  

  Habitat. 
  Larvae 
  and 
  pupae 
  found 
  in 
  rapid 
  currents 
  in 
  Little 
  Clear 
  

   creek. 
  Adults 
  settled 
  in 
  great 
  numbers 
  on 
  the 
  hatchery 
  windows. 
  

  

  Occurrence. 
  Abundant 
  throughout 
  the 
  period. 
  

  

  Case. 
  No 
  larval 
  case, 
  only 
  strands 
  of 
  silk 
  between 
  the 
  rocks. 
  Pupal 
  

   case 
  (pi. 
  15, 
  fig. 
  4) 
  of 
  rather 
  coarse 
  stones 
  fastened 
  to 
  larger 
  stones 
  or 
  

   other 
  supports. 
  

  

  Larva. 
  (PI. 
  15, 
  fig. 
  3) 
  Length 
  16 
  mm. 
  Width 
  3 
  mm. 
  Head 
  

   brownish 
  yellow. 
  A 
  dark 
  brown 
  patch 
  in 
  front, 
  and 
  in 
  the 
  center 
  of 
  this, 
  

   a 
  horseshoe 
  shaped, 
  yellow 
  mark 
  opening 
  posteriorly. 
  Labium 
  almost 
  

   black. 
  Prothorax 
  brownish 
  yellow 
  margined 
  with 
  black. 
  Mesothorax 
  

   same 
  except 
  that 
  the 
  black 
  margin 
  is 
  not 
  complete. 
  Instead, 
  there 
  is 
  a 
  

   semicircular 
  black 
  fine 
  at 
  posterior 
  margin. 
  Mesothorax 
  is 
  similar 
  with 
  

   black 
  spot 
  instead 
  of 
  the 
  semicircle. 
  Legs 
  yellow 
  with 
  white 
  spots 
  on 
  

   coxa 
  and 
  femur. 
  Abdomen 
  white, 
  the 
  dorsal 
  side 
  thickly 
  set 
  with 
  blunt, 
  

   brown 
  hairs. 
  No 
  tubercles 
  on 
  the 
  first 
  segment. 
  Filaments 
  occur 
  only 
  

   on 
  the 
  ventral 
  side. 
  Thev 
  are 
  set 
  in 
  two 
  rows 
  on 
  the 
  mesothorax, 
  the 
  

  

  